A poll of 2,114 randomly selected adults showed that 94% of them own cell phones. The technology display below results from a test of the claim that 91% of adults own cell phones. Use the normal...


A poll of 2,114 randomly selected adults showed that 94% of them own cell phones. The technology display below results from a test of the claim that 91% of<br>adults own cell phones. Use the normal distribution as an approximation to the binomial distribution, and assume a 0.01 significance level to complete parts<br>(a) through (e).<br>Test of p = 0.91 vs p+ 0.91<br>Sample X<br>Sample p<br>95% CI<br>Z-Value<br>P-Value<br>1<br>1987<br>2,114<br>0.939924<br>(0.926612,0.953237)<br>4.81<br>0.000<br>.....<br>a. Is the test two-tailed, left-tailed, or right-tailed?<br>Two-tailed test<br>Right tailed test<br>Left-tailed test<br>b. What is the test statistic?<br>The test statistic is<br>(Round to two decimal places as needed.)<br>c. What is the P-value?<br>The P-value is<br>(Round to three decimal places as needed.)<br>d. What is the null hypothesis and what do you conclude about it?<br>Identify the null hypothesis.<br>О А. Но: р> 0.91<br>О в. Но: р#0.91<br>О с. Но: р<0.91<br>O D. Ho: p= 0.91<br>Choose the correct answer below.<br>A. Fail to reject the null hypothesis because the P-value is less than or equal to the significance level, a.<br>O B. Reject the null hypothesis because the P-value is greater than the significance level, a.<br>O C. Reject the null hypothesis because the P-value is less than or equal to the significance level, a.<br>Eail to reiect the null hypothesis because the P-value is greater than the significance level a<br>

Extracted text: A poll of 2,114 randomly selected adults showed that 94% of them own cell phones. The technology display below results from a test of the claim that 91% of adults own cell phones. Use the normal distribution as an approximation to the binomial distribution, and assume a 0.01 significance level to complete parts (a) through (e). Test of p = 0.91 vs p+ 0.91 Sample X Sample p 95% CI Z-Value P-Value 1 1987 2,114 0.939924 (0.926612,0.953237) 4.81 0.000 ..... a. Is the test two-tailed, left-tailed, or right-tailed? Two-tailed test Right tailed test Left-tailed test b. What is the test statistic? The test statistic is (Round to two decimal places as needed.) c. What is the P-value? The P-value is (Round to three decimal places as needed.) d. What is the null hypothesis and what do you conclude about it? Identify the null hypothesis. О А. Но: р> 0.91 О в. Но: р#0.91 О с. Но: р<0.91 o="" d.="" ho:="" p="0.91" choose="" the="" correct="" answer="" below.="" a.="" fail="" to="" reject="" the="" null="" hypothesis="" because="" the="" p-value="" is="" less="" than="" or="" equal="" to="" the="" significance="" level,="" a.="" o="" b.="" reject="" the="" null="" hypothesis="" because="" the="" p-value="" is="" greater="" than="" the="" significance="" level,="" a.="" o="" c.="" reject="" the="" null="" hypothesis="" because="" the="" p-value="" is="" less="" than="" or="" equal="" to="" the="" significance="" level,="" a.="" eail="" to="" reiect="" the="" null="" hypothesis="" because="" the="" p-value="" is="" greater="" than="" the="" significance="" level="">
e. What is the final conclusion?<br>O A. There is sufficient evidence to warrant rejection of the claim that 91% of adults own a cell phone.<br>B. There is sufficient evidence to support the claim that 91% of adults own a cell phone.<br>C. There is not sufficient evidence to warrant rejection of the claim that 91% of adults own a cell phone.<br>O D. There is not sufficient evidence to support the claim that 91% of adults own a cell phone.<br>

Extracted text: e. What is the final conclusion? O A. There is sufficient evidence to warrant rejection of the claim that 91% of adults own a cell phone. B. There is sufficient evidence to support the claim that 91% of adults own a cell phone. C. There is not sufficient evidence to warrant rejection of the claim that 91% of adults own a cell phone. O D. There is not sufficient evidence to support the claim that 91% of adults own a cell phone.

Jun 04, 2022
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